考虑二维预防性维修策略的基础质保期拓展方法

A Base Warranty Extension under a Two-dimensional Preventive Maintenance Strategy

围绕新能源汽车等产品的二维质保期拓展问题,提出了一种考虑二维预防性维修策略的基础质保期拓展方法。首先,建立了质保期内不同二维预防性维修水平的期望质保成本模型和拓展二维质保期下产品销量函数模型。其次,以制造商期望净利润最大化为目标,建立了二维质保拓展因子的优化模型。最后,以新能源汽车的二维基础质保期拓展为例,对不同二维预防性维修水平下的最优拓展进行了方法验证,并对模型中关键参数进行了敏感性分析。所提方法丰富了二维质保期设计与优化的相关理论,并为制造商开展二维质保期拓展提供了借鉴方法。

Considering a two-dimensional preventive maintenance strategy for products,such as new energy vehicles,a base warranty extension method was proposed.Firstly,an expected warranty cost model was established for products under different two-dimensional PM levels.A demand function for products with an extended base warranty period was proposed.Secondly,the optimal extension of the base warranty was given to maximize the manufacturer's expected net profit.Finally,a case study of new energy vehicles'two-dimensional base warranty extension was given to illustrate the optimal extension under different two-dimensional PM levels,and a sensitivity analysis of the effects of key parameters on the optimal warranty extension was conducted.The proposed method will extend the research fields of two-dimensional warranty period design and optimization.It will be helpful for the manufacturer to conduct the two-dimensional base warranty extension.